Object (head shaver) is bubbling/moving after rendered?
I fiddled with the .blend and inspected rendering results between frames around 30-34 which were shading inconsistently. Turns out it's not about geometry or animations but the culprit is unused / misused Displacement-slot on the Material Output node of the material. Removing the connection (from multiply node and empty image node) to the Displacement slot solved the rendering issue. This slot should behave properly with an actual texture, you have to be feed it very small numbers. But I wouldn't be surprised if this feature was still a little bit unstable with Eevee.